T5 step base



FIG. 1 is a perspective view of a T5 step base showing my new design;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a bottom view of FIG. 1;

FIG. 4 is a front view of FIG. 1;

FIG. 5 is a side view of FIG. 1; and,

FIG. 6 is an inverted perspective view of FIG. 1. 

The ornamental design for a T5 step base, as shown and described. 